Owner

Current status

Detailed Description

The idea is for CUPS to apply ICC profiles to print jobs when converting them to a raster format. It uses colord to determine the correct profile to apply, and the gstoraster filter applies the profile to the job.

Benefit to Fedora

A properly color managed system will provide better color fidelity from screen to print.

Scope

Most of the work is already in place. The main part remaining is testing.

How To Test

For "real world" testing, something like a colormunki is required. Does anyone have one of these?

A more accessible way of testing this feature is to use test profiles which are obviously wrong in some particular way (e.g. inverted), as a visual method for determining that a particular profile was in fact applied.

We need to test that:

No profile is applied when there is no profile to apply

The profile is applied when there is a single profile available

The correct profile is applied when there are several available, each for a specific resolution, color space, and media type

Warnings/errors in error_log are kept to a minimum

User Experience

Without an ICC profile set for a queue: no change.

With an ICC profile set for a queue: better color fidelity.

Dependencies

colord

Contingency Plan

In the worst case, the icc patch can be removed from the cups package.